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Andreas93 [3]
3 years ago
14

Maura drives to work, a distance of 30 miles in 40 minutes. she takes the same route to return home. if her average speed on the

trip home is half as fast as her average speed on the trip to work, what is her average speed, in miles per hour, for the entire round trip
Mathematics
1 answer:
Viefleur [7K]3 years ago
8 0

Well to solve this firstly we should calculate her average speed while she was going to work. Which comes out to be 45 miles per hour.

Now if her average speed while going home is half as fast as while coming to work was, the answer would be 22.5 miles per hour. So the average speed for the total journey would be the average for these two values. As the distance was same for both the journeys we can simply do 45 + 22.5 / 2 = 33.75 mph.

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The first side of a triangle measures 4 in. less than the second side, the third side is 3 in. more than the first side, and the
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Answer:

\boxed{\frac{23}{3} ~in} or \boxed{7,7~in}

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Step-by-step explanation:

Suppose, the first side is a, the second side is b, and the third side is c. So:

→ a = s - 4

→ b = s

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→ a + b + c = 15

First step, find the value of s

a + b + c = 15

(s - 4) + s + (s - 4) + 3 = 15

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3s = 20

s = \frac{20}{3}

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c = (s - 3) + 4

c = s + 1

c = \frac{20}{3} + 1

c = \frac{23}{3}

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3 years ago
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ANSWER

45.6cm to the nearest tenth.

EXPLANATION

The diagonal of the rectangular painting is 62cm.

The height of the painting is 42 cm.

The height of the painting h , the diagonal, and the width of the painting forms a right triangle with the diagonal being the hypotenuse.

From the Pythagoras Theorem,

{w}^{2}  +  {42}^{2}  = {62}^{2}

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